context-primer

context-primer is a skill for Claude Code, Codex from Justinmendezai/The-Adam-Repo. It costs 79 tokens per session (2,109 once invoked), scanned A, original, Apache-2.0.

A handoff document generator for a long-running software project. It condenses the current high-level work into a short brief that another agent or a later session can read.

In plain words
What is it for?
Use it before handing work to another person or agent, after a major testing phase, or when nearing the session's context limit to update the project's canonical continuation brief and keep an audit copy.
Why use it?
It prevents important decisions, progress, and next steps from being lost when the conversation becomes too long or work pauses.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents.

Good fit Use it before handing work to another person or agent, after a major testing phase, or when nearing the session's context limit to update the project's canonical continuation brief and keep an audit copy.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/justinmendezai/the-adam-repo/context-primer
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Justinmendezai/The-Adam-Repo --skill context-primer
Clone the repo
git clone --depth 1 https://github.com/Justinmendezai/The-Adam-Repo

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for context-primer

README.md
[![agentmods](https://agentmods.dev/badge/skills/justinmendezai/the-adam-repo/context-primer/github.svg)](https://agentmods.dev/skills/justinmendezai/the-adam-repo/context-primer)
Your own site
<a href="https://agentmods.dev/skills/justinmendezai/the-adam-repo/context-primer"><img src="https://agentmods.dev/badge/skills/justinmendezai/the-adam-repo/context-primer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for context-primer

Your own site · 80×15
<a href="https://agentmods.dev/skills/justinmendezai/the-adam-repo/context-primer"><img src="https://agentmods.dev/badge/skills/justinmendezai/the-adam-repo/context-primer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,109 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00079 $0.02109
Opus 5 $0.00039 $0.01055
Sonnet 5 $0.00016 $0.00422
Haiku 4.5 $0.00008 $0.00211

Measured 12d ago against content hash 5ecb9f9a00f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

context-primer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/context-primer/SKILL.md · 181 lines

How it starts

The opening of the file, as written. The whole thing — 181 lines — stays where its author put it; the contents beside it link to each section on GitHub.

context-primer

The token-budget escape hatch. When the orchestrator is getting heavy, dump everything the next agent needs to resume the build into a single primer file. The next session reads only the primer, not your full transcript.

Canonical handoff for Adam: if agent-control/next-orchestrator-brief.md exists, treat it as the source of truth for “what to do next.” This skill still writes scratch/handoff/primer-*.md as an audit trail — that primer must not contradict the brief.

After writing the primer, update agent-control/next-orchestrator-brief.md (or add a prominent pointer at the top of the primer: "Sync this content into agent-control/next-orchestrator-brief.md via copy or run session-steward").

When to run

  • Token usage at ~50–60% of capacity.
  • About to hand off to a different model or person.
  • About to wrap for the day on a multi-day build.
  • After e2e-acceptance — capture the final state for posterity.

When to compact (decision table)

The 50–60% threshold tells you when you may; this table tells you whether you should. Compact at logical phase boundaries, not mid-task.

Phase transition Compact? Why
Research/intake → plan Yes Research context is bulky; the plan is the distilled output.
Plan → build (first dispatch) Yes The plan lives in plan/ and slice-status.md; free context for dispatch and review.
Mid-implementation review of one slice No You lose file paths, branch names, and partial dispatch state. Finish the wave first.
After a failed approach / abandoned dispatch Yes Clear the dead-end reasoning before trying a new path.
Build → e2e-acceptance Maybe Keep if the acceptance walk references slices you just reviewed; compact if switching focus.
Between bounded orchestrator cycles Yes Hand the next cycle a clean brief via session-steward.

What survives a compaction

Compact with confidence by knowing what persists versus what is lost. Anything in the "Lost" column must be written to disk before you compact.

Read the full file on GitHub · 181 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 181 lines · 79 tokens per session scan A 5ecb9f9a00f7

Subscribe to this mod's changes

context-primer is a skill published in the GitHub repository Justinmendezai/The-Adam-Repo (12 stars, last pushed 18d ago), licensed Apache-2.0. It adds 79 tokens to every session and 2,109 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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